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Electric Circuits

Electric Circuits
Condition for reciprocity in case of ABCD parameters is

  AB-CD = 0.
 AD-BC = 1 .
 AB-CD = 1.
 AD-BC = 0.

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Electric Circuits
What is the value of charge of an electron?

 1.6022 × 10-8 Coulomb
 1.6022 × 10-7 Coulomb
 1.6022 × 10-27 Coulomb
 1.6022 × 10-19 Coulomb

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Electric Circuits
A external resistance R is connected to a cell of internal resistance r, then the current is maximum when

 R < r.
 R = r.
None of these
 R > r.

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Electric Circuits
For balanced star load, if unbalanced line current are IR, IY, IB equal to - j10, - j10 and - j20 respectively, the neutral current will be equal to

  (8.66 + j5) A.
  (8.66 - j5) A.
  (-8.66 - j5) A.
  (-9.66 + j5) A.

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Electric Circuits
Poorest conductor of electricity is

  Carbon.
  Aluminium.
  Steel.
  Silver.

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Electric Circuits
A balanced 3 - φ star connected load is fed from a 208 V, 3 - φ supply. Each load has resistance of 35 Ω. The total power is

 618 W.
 411.3 W.
 1236 W.
 none of these.

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